Sled attachment for supporting multiple purpose plows



J. W. LYNCH June 22, 1965 SLED ATTACHMENT FOR SUPPORTING MULTIPLE PURPOSE FLOWS 5 Sheets-Sheet 1 Original Filed June 5, 1959 FE IJI John M. Lynch INVENTOR.

BY WM J. w. LYNCH Re. 25,803

SLED ATTACHMENT FOR SUPPORTING MULTIPLE PURPOSE PLOWS June 22, 1965 5 Sheets-Sheet 2- Original Filed June 3, 1959 QQN John W. Lynch 1N VEN TOR.

June 22, 1965 J. w. LYNCH Re. 25,303

SLED ATTACHMENT FOR SUPPORTING MULTIPLE PURPOSE PLOWS Original Filed June 3, 1959 5 Sheets-Sheet 3 John W Lynch INVENTOR.

J. W. LYNCH June 22, 1965 5 Sheets-Sheet 4 Original Filed June 5, 1959 John l6. Una h Y INVENTOR.

9g BY Fig. 4 I E 3 J. W. LYNCH June 22, 1965 SLED ATTACHMENT FOR SUPPORTING MULTIPLE PURPOSE PLOWS Original Filed June 3, I959 5 Sheets-Sheet 5 John 'w. Lynch INVENIORY United States Patent ()filice Reissued June 22, 1965 25,803 SLED ATTACHMENT FOR SUPPORTING MULTIPLE PURPOSE [PLOW] PLOWS John W. Lynch, Lubbock, Tex., assignor, by mesne assignments, to Randolph Manufacturing Company, a corporation of Texas Original No. 3,052,306, dated Sept. 4, 1962, Ser. No. 817,849, June 3, 1959. Application for reissue July 2, 1963, Ser. No. 293,574

13 Claims. (Cl. 172-393) Matter enclosed in heavy brackets appears in the original patent but forms no part of this reissue specification; matter printed in italics indicates the additions made by reissue.

This invention relates in general to new and useful improvements in agricultural implements, and more specifically to a multiple purpose plow.

In the conventional mounting of farm implements, the implements are mounted directly upon the tool bar of the tractor with the result that the implements do not individually compensate for the irregularities in the level of the ground. It is therefore the primary object of this invention to provide a plow unit which is of such a nature that each plow unit can rise or Lfall with variation in the level of the ground independently of the other plow units attached to the tractor tool bar, and in operation, the plow units will function simultaneously and provide for uniformity of depth for preparing beds, for planting, and for cultivation of the plants after a crop is up.

A further object of the invention is to provide a novel sled which may be mounted on a tractor tool bar for vertical movement relative thereto, the sled being provided with runners which will engage the ground and follow the contour thereof, the sled being provided with suitabe tool mounting means whereby the necessary tools may be carried by the sled to perform the ground shaping operations.

Still another object of this invention is to make use of the customary tractor tool bar in a novel manner. Normally the tractor tool bar is used for a direct attachment of tools, such as .listers, knifing apparatus, etc. and the gauge wheels on the tool bar serve to lower or heighten the plow depth. The tool bar is usually 12 feet in length and when the individual plow tools are connected directly to the tool bar, there is uneven cultivation. In accordance with the object of this invention, the tools are connected to the tool bar for vertical movement independently of the tool bar so that the individual tools may follow the contour of the ground which is being worked.

A further object of the invention is to provide a novel linkage for attaching a tool carrying sled to a tractor tool bar, the linkage being of a parallelogram type and being spring-loaded whereby it is normally positioned with respect to the tool bar, but may be biased to offset positions above and below the tool bar and to have pressure engagement with the ground so that the sled will follow the contour of the ground during aground working operation.

Still another object of the invention is to provide a novel plow which includes a sled adapted to be carried by a tool bar, the sled having means for mounting a coulter disk thereon, the mounting means of the coulter disk being capable of both vertical, spacing and angular adjustment whereby the coulter disk may be vertically adjusted or angularly adjusted to produce the desired ground working effect.

Still another object of the invention is to provide a novel knife assembly, the knife assembly including a sled having mounting means for attachment to a tractor tool bar, the knife assembly being mounted upon the sides of the sled for adjustment both about a longitudinal axis and a transverse axis whereby the desired operatior may be obtained with the knife by the proper adjustment thereof.

A still further object of the invention is to provide 2 novel plow assembly which includes a sled having mean: mounting it on a tractor tool bar, the sled being providec' with attachments for mounting various types of tools in cluding coulter disks, knives, cultivator plows, rotar} hoes, and planters.

These together with other objects and advantages whicl: will become subsequently apparent reside in the detail: of construction and operation as more fully hereinafter described and claimed, reference being had to the ac companying drawings forming a part hereof, whereir like numerals refer to like parts throughout, and in which:

FIGURE 1 is a side elevational view of one of tilt plow units, which is the subject of this invention, ant shows the plow unit mounted on a tractor tool bar, onl; the tool bar, shown in section, of the tractor being shown;

FIGURE 2 is a plan view on a reduced scale showing a plow assembly utilizing a plurality of the plow unit: of FIGURE 1 and shows the same attached to a tracto: by means of the tractor tool bar;

FIGURE '3 is an enlarged plan view of the plow uni of FIGURE 1 and shows further the details thereof, thr gauge wheels for supporting the outer ends of the tracto. tool bar being shown, intermediate parts of the tracto: tool bar being bro-ken away;

FIGURE 4 is a front elevational view of the plow uni of FIGURES 1 and 3 and shows further the detail.

thereof;

FIGURE 5 is a perspective view on a reduced scalr showing one of the plow units mounted on an outer em of a tractor tool bar and further shows the arrangemen of one of the gauge wheels for the tractor tool bar am cultivator plows mounted on the tractor tool bar on op posite sides of the plow unit;

FIGURE 6 is a fragmentary front elevational view on a reduced scale of a plow assembly and shows one of thl plow units in a cultivating operation;

FIGURE 7 is an enlarged exploded perspective viev showing the mounting of one of the knives with respec to a side plate of the plow sled;

FIGURE 8 is an enlarged fragmentary front ele vational view showing further the details of the mounting of one of the knives with respect to a side plate of th sled, adjusted positions of the knife about a longitudina axis being shown in dotted lines;

FIGURE 9 is a fragmentary side elevational view 0 the sled and knife and shows the knife in adjusted posi tions about a transverse axis, the adjusted positions be ing shown by dotted lines;

FIGURE 10 is an enlarged fragmentary perspectivview of the means for mounting the coulter disk;

FIGURE L1 is an enlarged fragmentary perspectiv View showing a portion of the carrier means for mount ing the coulter disk and shows the manner in which vertical support bar is carried thereby;

FIGURE 12 is an enlarged fragmentary transverse sec tional view taken substantially upon the plane indicate by section line 1212 of FIGURE 10 and shows th mounting of one of the support arms for a coulter disk a lowered position of the carrier and support arm bein shown by dotted lines.

Referring now to the drawings in detail, it will b seen that there is illustrated in FIGURE 2 a rear portio: of a conventional tractor which is referred to in genera by the reference numeral 10. The tractor 10 include a lift arm mechanism generally referred to by the nu metal 12, the lift arm mechanism having secured thereti 1' vertical movement a conventional tool bar 14. The 01 bar 14 extends transversely oi the tractor at the ar thereof and projects to both sides thereof. The 01 bar 14 supports a plow assembly which is generally ferred to by the numeral 16. When the plow assembly 16 is in operation, the tool I 14 is supported, as shown in FIGURES 2 and 3, a preterm'ined distance above the surface of the ground by eans of a pair of gauge wheels 18 mounted at opposite .ds thereof. Each of the gauge wheels 18 is adjustably cured to the tool bar 14 by means of a clamp 20 which vs a sleeve portion 22 in which a vertical portion of a pport 24 for the gauge wheel 18 is positioned. The pport 24 has a horizontal axle 26 on which the gauge reel 18 is rotatably mounted. The support 24 is verally adjustable with respect to the clamp 20 to facili- :e the positioning of the tool bar 14 at the desired opating height. Referring once again to FIGURE 2 in particular, it ll be seen that a plurality of plow units, generally rered to by the numeral 28, are secured to the tool bar Since these plow units 28 are identical, only onev of a plow units 28 will be described in detail hereinafter. Each of the plow units 28 includes a sled generally rered to by the numeral 30, see FIGURES l, 3 and 5. 1e sled 30 is formed from a pair of side plates 32 which 'minate at their lower edges in opposed inwardly exrding runners 34, see also FIGURE 7. The side plates are secured together at spaced intervals through the e of the spacer sleeves 36 therebetween and bolts 38 t nding through the side plates 32 and the spacer sleeves The opposite ends of the bolts 38 are provided with ts 40 to clamp the assembly together. The sled 30 is mounted on the tool bar 14 by a mounting :ans generally referred to by the numeral 42. The routing means 42 includes a pair of upstanding legs at the rear of the side plates 32. The upstanding legs are transversely aligned and have secured thereto fitgs 46 which support a transverse shaft 48 for pivotal )vement. A pair of transversely aligned arms 50 extend upwardfrom the side plates 32 intermediate the ends thereof. e arms 50 have fittings 52 secured to upper portions reof, the fittings 52 being transversely aligned and ng similar to the fittings 46. A transverse shaft 54 ends between and is rotatably journalled in the fittings A two-piece clamp assembly, generally referred to by numeral 56, is secured to the tool bar 14 centrally of sled 30. The clamp assembly includes a lower bi cated clamp member 58 and an upper bifurcated clamp mber 60, the clamp member 58 extending downwardly l forwardly and the clamp member 60 extending genlly rearwardly. The clamp members 58 and 60 are ured together by means of a pair of fasteners 62 dis- :ed on opposite sides of the tool bar 14.

& transverse pivot pin 64 extends between the lower 'tions of the clamp member 58. The pivot pin 64 sup- 'ts a lower trailing arm 66. The lower trailing arm is adjustably received in a fitting 68 which is rigidly ured to the shaft 54.

Fhe rear part of the clamp member 60 supports a transse pivot pin 70. The pivot pin 70 supports an upper ling arm 72 which is slidably received and normally nped in a fitting 74 which is similar to the fitting 68. fitting 74 is clamped on the shaft 48.

is is best shown in FIGURE 1, the distance between centers of the pivot pins 64 and 70 is normally equal :he distance between the centers of the shafts 48 and When the sled 3%] is horizontally mounted, the effeclength of the trailing arms 66 and 72 will be the re. In this manner a parallelogram linkage is proed so that the movement of the sled 30 is vertical.

uld it be desired that the forward end of the sled be slightly above the rear end thereof, then the etfective length of the trailing arm 66 will be shortened. On the other hand, should it be desired that the rear end of the sled 30 be elevated above the forward end thereof, then the trailing arm 72 may have its effective length shortened. Of course, the same results can be obtained by lengthening the effective length of the trailing arm '72 in the first instance and lengthening the length of the trailing arm 66 in. the second instance.

A support arm 76 extends upwardly and rcarwardly from the clamp member 6%. The support arm '76 terminates at its upper end in a transverse sleeve 76. A rod 80 is provided at the lower end thereof with a fitting 82 which is pivotally connected to the fitting '74. The rod 8!) loosely extends through the sleeve 78. A lower collar 84 and an upper collar 86 are adjusta'oly positioned on the rod 30 on opposite sides of the sleeve '73. A lower coil spring 38 is mounted on the rod $6 and extends between the sleeve 755 and the collar 84. An upper spring 90 is mounted on the rod 89 and extends between the sleeve 78 and the collar 36. The springs 83 and nor mally balance each other and serve to support the sled 30 from the tool bar 14. When the plow unit 28 is in operation, the tool bar 14 is moved downwardly to a point where the sled 3t) compressively engages the ground. As a result, the sled 3% moves upwardly with respect to the sleeve 73 and the coil spring 8? is compressed while the coil spring 96 is temporarily relaxed. By so compressing the coil spring 88, the sled 35B is constantly urged downwardly towards the ground and will follow the contour of the ground. Further, the mounting of the sled 30 is such that the event the sled 3t) should hit a high point as compared to the remainder of the plow assembly, the individual sled 3t) may move upwardly to follow the contour of the ground.

The sled 36 is intended to support a variety of different types of tools. The first of these is a pair of coulter disks 92 which are mounted at the forward end of the sled 30. A support assembly 94, see FIGURES 10-12, is provided for the coulter disks 92.

The support assembly 94 includes a support member 96 which is positioned between the forward part of the plates 32 and has depending flanges 93 which are secured to the side plates 32. The upper part of the support 96 is defined by a pair of upstanding legs 10%) and a cross bar 102. The race 103 extends between the flanges A carrier, generally referred to by the numeral 1% is mounted within the support 96 for guided vertical movement. The carrier 1&4 is normally fixed and is supported by the support 96. The carrier 15M includes a generally rectangular frame 106 which is received between the legs and is prevented from twisting thereby. A sleeve lllS extends vertically through the center of the carrier An adjusting screw 11'!) is rotatably supported by the cross bar 192 and is threadedly engaged in an internally threaded bore 112 extending through the sleeve 1&3. In this manner a carrier 1% is adiustably vertically positioned with respect to the support as. A pair of forwardly and downwardly extending support arms 114 are pivotally mounted on the carrier 1ll4 on opposite sides of the sleeve 103. The support arms 114 each terminate at their forward ends in a stub axle 116 (see FIGURE 16), on which an associated one of the coulter disks 92 is mounted. The support arms 114 are swingable about vertical axes within the carrier 1%. In this manner the angle and spacing of the two coulter disks 92 with respect to the direction of movement or" the plow assembly 16 may be varied. The support arms 114 are retained in adjusted positions through a pair of braces 118 which are secured to the support arms 114, see FIGURES 3 and 10, and whose overlapping positions are adjustably secured together by a bolt 129.

As is best shown in FIGURE 11, the carrier llld has a pair of rearwardly extending, generally horizontal sleeves 122. The sleeves 122 are vertically aligned and may have a suitable vertical support bar 124 extendin therethrough.

The support bar 124 is secured in place in the sleeves 122 through the use of setscrews 126 carried by the sleeves. The bar 124 may be used to support a planter or other type of implement in an elevated position above the sled 30.

A knife assembly, generally referred to by the numeral 128, see FIGURES 1, 3, 5, 7-9, is secured to each of the side plates 32. Each knife assembly 128 includes an outwardly projecting knife 130 which slopes rearwardly from its associated side plate 32. Each knife 130 is provided with a forward cutting edge 132.

The individual knife 130 is secured to its respective side plates 32 by means of an elongated support shaft 134-, see FIGURE 7. The support shaft 134 extends longitudinally of its respective side plate 32 upon the inner face thereof and is provided at the forwad end thereof with a fitting 136. The fitting 136 includes a transverse pivot member 138 which extends through an opening 140 in the side plate 32 and is retained in an adjusted position by a lock washer 142 and a nut 144.

A fitting 146 is removably mounted on the rear end of the shaft 134. The fitting 146 includes a threaded pivot pin portion 148 which extends through a vertical slot 150 in the side plate 32. A lock washer 152 and a nut 154 retains the fitting 146 in a vertically adjusted position.

The lower part of the side plate 32 is provided with a generally rectangular opening 156 of a size to permit the passage of a sleeve portion 153 formed on an offset end 160 of the knife 130. The sleeve portion 158 receives the shaft 134 and thus mounts the knife 130 for pivoting about a longitudinal axis.

A cover plate 162 is carried by the offset part 160 of the knife 130 and has a slot 164 receiving the offset part 160. The plate 162 is normally secured in place against the side of the side plate 32 by a pair of bolts 166 which extends through holes 168 in the side plate 32 and slots 17 Oin the cover plate 162. Each bolt 166 is provided with a lock washer 172 and a nut 174. Through the provision of the slots 170, the mounting plate 162 may be vertically adjusted so as to retain the knife 130 in a position pivoted about the shaft 134. The range of these several positions are illustrated in FIGURE 8 by dotted lines.

As is best illustrated in FIGURE 9, the knife 130 is also adjustable about a transverse axis. This is accomplished by pivoting the shaft 134 about the pivot pin 138. The adjustment is permitted due to the positioning of the pivot pin 148 in the slot 150.

The upper portion of each of the legs 44 is provided with rearwardly otfset parts 176. A fitting 178 is secured to the outer face of each of the legs 44. The fittings 17 S are aligned and support a tool bar 180 which extends therethrough and which may support a variety of tools. For example, cultivator plows and shovels 182 are clamped to the outer portions of the tool bar 189. If desired, a third cultivator shovel 182 may be clamped to the tool bar 180 intermediate the side plates 32. However, a rotary hoe, see FIGURE 1, generally referred to by the numeral 184 is illustrated as being positioned between the side plates 32.

The rotary hoe 184 includes a clamp 186 which is secured to the tool bar 180 intermediate the side plates 32. The clamp 186 in turn supports a vertical post 188 carrying a frame 190. The frame 1% supports a forward shaft 192 and a rear shaft 194. A pair of widely spaced rotary hoe members 196 are rotatably journalled on the shaft 192. A centrally located rotary hoe member 198 is mounted on the shaft 194.

Reference is now had to FIGURE 5 in particular. It will be seen that other cultivator plows or shovels 200' are secured directly to the tool bar 14. The pattern of these complementary shovels 290 may vary as desired. However, normally at least one of the cultivator shovels will be placed at each end of the tool bar 14 rearwardly of and in alignment with one of the gauge wheels 18 so as to eliminate the tire tread mark thereof.

Although the plow units 28 have been illustrated as being four in number in FIGURE 2 and staggered with respect to the rear wheels of the tractor 10-, when the coulter disks 92 and their supports are removed, the relation of the plow units 28 may be varied so that one of the plow units 28 may be disposed immediately rearwardly of each of the tractor rear wheels.

It will be readily apparent that the sleds 30 are of such a construction whereby any desired type of tool may be supported thereby. Furthermore, because of the particular novel mounting of the sleds 30', the sleds 30 and the tools carried thereby will follow the contour of the ground thereby obtaining the desired cultivation.

Each of the side plates 32 has a quadrant of a circle removed at the rear thereof as at 202. The openings 202 are to permit the cultivator shovels 182 to throw soil in against the plant row. In order that the soil may be more uniformly distributed, two rotary hoes 196 can be located between the side plates 32 thus protecting the plants from the impact of the larger masses of soil and at the same time pulverizing and distributing the soil.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.

What is claimed as new is as follows:

1. A multiple purpose plow comprising a sled, tool mounting means carried by said sled, and means for mounting said sled on a tool bar, said sled mounting means including a clamp adapted to be fixedly mounted on a tool bar, a pair of trailing arms pivotally connected to said clamp, and fittings carried by said sled pivotally connecting said trailing arms to said sled, said sled mounting means including a rod pivotally connected to said sled, an arm fixedly secured to said clamp, a sleeve carried by said arm receiving an intermediate part of said rod, and counter balance springs carried by said rod and engaging opposite ends of said sleeve.

[2. A multiple purpose plow comprsing a sled having side plates, ground engaging runners along the lower edges of said side plates, means for mounting said sled on a tool bar, and tool mounting means carried by said side plates, said tool mounting means including a support disposed between forward ends of said side plates, a carrier carried by said support, forwardly extending support arms extending from said carrier, and coulter disks mounted or said support arms] 3. [The plow of claim 2 wherein] A multiple PZH'POSt plow comprising a sled having side plates, ground engaging runners along the lower edges of said side plates means for mounting said sled on a tool bar, and too mounting means carried by said side plates, said too mounting means including a support disposed betweel forward ends of said side plates, a carrier carried by Stilt support, forwardly extending support arms extending from said carrier, coulter disks mounted on said suppor arms, said carrier [is] slidably mounted in said support and means carried by said support for adjusting the ver tical position of said carrier to vertically position sai: coulter disks.

4. [The plow of claim 2 wherein] A multiple purpos plow comprising a sled having side plates, ground engag ing runners along the lower edges of said side plates, mean for mounting said sled on a tool bar, and tool mountin means carried by said side plates, said tool mountin means including a support disposed between forward ena of said side plates, a carrier carried by said support, for wardly extending support arms extending from said car rier, coulter disks mounted on one end of said suppo; arms, said support arms [are] on the other end therec pivotally mounted for pivoting about vertical axes to var port for adjusting the vertical position of said carrier to vertically position said ooulter disks.

[6. A multiple purpose plow comprising a sled having side plates, ground engaging runners along the lower edges of :said side plates, means for mounting said sled on a tractor tool bar, a knife extending outwardly from and 10 through a slot in each of said side plates, and mounting means carried by the inside surface of each of said side plates and mounting its respective knife for tilting about 1 longitudinal axis, fastening means engaging said side plates and knives and fixedly securing the latter in adusted tilted positions] [7. A multiple purpose plow comprising a sled having ildB plates, ground engaging runners along the lower edges )f said side plates, means for mounting said sled on a ractor tool bar, a knife extending outwardly from and hrough a slot in each of said side plates, and mounting means carried by the inside surface of each of said side )lates and mounting its respective knife for tilting about 10th longitudinal and transverse axes, fastening means ngaging said side plates and knives and fixedly securing he latter in adjusted tilted positions] '8. [The plow of claim 6 wherein said knife mounting leans includes] A multiple purpose plow comprising a led having side plates, ground engaging runners along the rwer edges of said side plates, means for mounting said led on a tractor tool bar, a knife extending outwardly "0m and through a slot in each of said side plates, and wanting means carried by the inside surface of each of lid side plates and mounting its respective knife for liltig about a longitudinal axis, fastening means engaging rid side plates and knives and fixedly securing the latter in ljusted tilted positions, said knife mounting means inuding, a longitudinal shaft, a first fitting pivotal-1y oon- :cting one end of said shaft to a respective one of said do plates, and :a second fitting vertically adjustably securg the other end of said shaft to a respective one of said le plates.

[9. A multiple purpose plow comprising a sled having 1e plates, ground engaging runners along the lower edges said side plates, a knife extending outwardly from and 4,5

rough a slot in each of said side plates, and mounting sans including a bracket pivoted to and carried by the tide surface of each of said side plates and mounting respective knife for tilting about a transverse axis,

:tening means engaging said side plates and knives and edly securing the latter in adjusted tilted positions] 10. [The plow of claim 9 wherein] A multiple purpose w comprising a sled having side plates, ground engaging iners along the lower edge's of said side plates, a knife ending outwardly from and through a slot in each of d side plates, and mounting means including a bracket meal to and carried by the means including a bracket 'oted to and carried by the inside surface of each of d side plates and mounting its respective knife for tiltabout a transverse axis, fdstening means engaging said 2 plates and knives and fixedly securing the latter in usted tilted positions, said knife mounting means lClLldCS] including a longitudinal shaft, said knife being otally mounted on said shaft.

[1. A multiple purpose plow comprising a sled having 55 plates, ground engaging runners along the lower edges said side plates, means for mounting said sled on a l bar, a knife extending outwardly from and through lot in each of said side plates, and mounting means .ifid by the inside surface of each of said side plates mounting its respective knife for til-ting about longiinal and transverse axes, said knife mounting means uding a longitudinal shaft, a first fitting pivotally conting one end of said shaft to a respective one of said side plates, and a second fitting vertically .a-djustably securing the other end of said shaft to a respective one of said side plates, said knife being pivotally mounted on said shaft.

12. A multiple purpose plow comprising:

(a) a sled having side plates, and

(b) tool mounting means carried by said side plates (c) said tool mounting means including (:1) a support attached to the forward end of said side plates (2) a carrier carried by said supports,

(f) forwardly extending support arms extending from said carrier, and

(g) coulzer disks mounted on one end of said support arms,

(h) said support arms on the other end thereof pivotally mounted for pivoting about vertical axes to vary the angle and spacing of said coulter disk, and

(i) adjustable brace means extending between ls'uid support arms.

13. A multiple purpose plow comprising:

(a) a sled having side plates, and

(b) tool mounting means carried by said side plates (0) said tool mounting means including -(d) a support attached to the forward end of said side plates (e) a carrier carried by said support (f) forwardly extending support arms extending from said carrier, and

(g) coulter disks mounted on said support arms,

(h) said carrier slidably mounted in said support, and

(i) means carried by said support for adjusting the vertical position of said carrier to vertically position said coulter disks.

14. A multiple purpose plow comprising:

(a) a sled having side plates, and

(b) tool mounting means carried by said side plates (0) said tool mounting means including (a!) a support attached to the forward end of said side plates (c) a carrier carried by said support (f) forwardly extending support arms extending from said carrier, and

'(g) coulter disks mounted on one end of said support arms,

(h) said support arms on the other end thereof pivotally mounted for pivoting about vertical axes to vary the angle and spacing of said coulter disks,

(i) adjustable brace means extending between said support arms,

(, said carrier slidably mounted in said support, and

(k) means carried by said support for adjusting the vertical position of said carrier to vertically position said coulter disks.

15. An attachment adaptable to be attached to a sled having side plates, said attachment comprising in combination:

(a) a tool mounting means adapted to be attached to said side plates,

(b) said tool mounting means carried by said side plates (0) said tool mounting means including (d) a support attached to the forward end of 'said side plates (2) a carrier carried by said supports,

(f) forwardly extending support arms extending from said carrier, and

(g) coulter disks mounted on one end of said support arms,

(h) said support arms on the other end thereof pivotally mounted for pivoting about vertical axes to vary the angle and spacing of 'said coultcr disks, and

(i) adjustable brace means extending between said support arms.

16. An attachment adaptable to be attached to a sled 9 19 having side plates, said attachment comprising in combi- (k) means carried by said support for adjusting the vernation: tical position of said carrier to vertically position said (a) a tool mounting means adapted to be attached to coulter disks.

said side plates,

(b) said tool mounting means carried by said side plates r Refei'ences cued by the Examiner (C) said tool mounting means including o The following references, citedby the Examiner, are of (d) a support attached to the forward end of Said Side record 111 the patented file of this patent or the original plates patent.

'(e) a carrier carried by said support UNITED STATES PATENTS (f) forwardly extending support arms extending from 631,498 8/99 Clark 172188 said carrier, and 719,863 2/G3 Poole 172574 (g) coulter disks mounted on said support arms, 732,191 6/93 Kemper 172574 (It) said carrier slidably mounted in said support, and 767,007 #8/04 Page 172-394 (1) means carried by said support for adjusting th ve 776,995 1 2/04 Bryant et a1 172-574 tical position of said carrier to vertically position said 800 562 9 m5 Friedeman coulter disks. 842,066 11/07 Beyrner.

17. An attachment adaptable to be attached to a sled 366 135 9/07 Brown,

having side plates, said attachment comprising in combi- 1 992 377 4/14 M At nation: 1,155,833 10/ l5 Melton 172-180 (a) a tool mounting means adapted to be attached t 1,238,616 8/17 Wyatt 172576 said side plates, 1,252,337 1/18 Pritsche 172-487 (b) said tool mounting means carried by said side plates 1,252,658 1/ 18 Butler 172603 (0) said tool mounting means including 1 770 648 7/ 30 J 011115011,

(d) a support attached to the forward end of said si e 1,953,649 4/34 Hansen 172-720 plates 1,993,165 3/35 Lindsey et a1.

(e) a carrier carried by said support 2 004 416 6 /3 5 O liml (f) forwardly extending support arms extending from 2 04 211 6/35 R th f d t 1 said carrier, and 2,259,864 10/441 Smith.

(g) coulter disks mounted on one end of said support 2 273,392 2/42 C k arms, 2,405,796 '8/46 May.

(h) said support arms on the other end thereof pivot- 2 5 9 464 10/51 Ed d et 1, 172 189 ally mounted for pivoting about vertical axes to vary 2 593 176 4 /52 Patterson the angle and spacing of said coulter disks, @(i) adjustable brace means extending between said sup- ABRAHAM STONE Primary Examiner port arms, ANTONIO IF. GUIDA, ARNOLD RUEGG, (j) said carrier slidably mounted in said support, and T. GRAHAM CRAVER, Examiners. 

